WO1997049561A1 - Resin composition for ink-jet printing material - Google Patents

Abstract

A resin composition for ink-jet printing material, comprising both a specific cross-linked polyalkylene oxide resin and (i) a polyamide resin and a cationic polymer, (ii) a cationic polymer, or (iii) an ethylenic polymer and a cationic polymer; and an ink-jet printing material comprising this composition. The composition is excellent in processability, can absorb ink at a high speed, and can give printed images excellent in the resistances to moist heat and water.

Description

 Harm

 Technical field of resin compositions for inkjet recording materials

 The present invention relates to a resin composition for a recording material used for ink jet recording using a water-based ink, and an ink jet recording material comprising the composition as a component. More specifically, the present invention relates to a resin composition for an ink jet recording material having excellent ink absorption ability, a clear recorded image, and excellent wet heat resistance and water resistance of the recorded image, and further, an ink fixing layer. The present invention relates to a resin composition for an ink jet recording material which is excellent in transparency or furthermore excellent in heat and moisture resistance and water resistance of an ink fixing layer, and an ink jet recording material comprising these compositions as components. Background art

 The ink jet printing method uses high speed, low noise, low printing cost, simple mechanism, small size and light weight, easy multi-color printing, easy to enlarge the image, no need for development and fixing, and high flexibility in the recording pattern. It has many features, such as, and is widely used as a method for obtaining hard copies that include not only text but also image processing.

 —On the other hand, as the use of OHP sheets and POP sheets is expanding, it is becoming necessary to use OHP sheets and POP sheets that can be printed as printers. In addition, as ink jet printers have become widespread, many types of printer inks have been put on the market, and the use of multi-color printers has spurred an increase in the number of ink types.

The quality required of these OHP sheets and POP sheets is (1) The fixing of various inks to the sheet is quick and good, and no dripping of ink occurs after printing;

 (2) High ink density and excellent color development:

 (3) The ink droplet does not spread more than necessary on the sheet, and the diameter of the dot does not become larger than necessary:

 (4) The ink image has excellent wet heat resistance and water resistance,

 In some cases, in addition to (1) to (4),

 (5) The transparency of the ink fixing layer in the OHP sheet must be

(6) Scratch: The trace of fingerprints is hard to adhere,

 In some cases, in addition to (1 :) to (4),

 (7) The ink fixing layer itself has excellent wet heat resistance and excellent water resistance.To meet these requirements, various water-based inks have been developed, and a recording sheet suitable for these inks has been developed. Uru has been proposed.

 However, there is no recording material that satisfies all of these items. Especially when water-based ink is used, the water resistance of the recorded image is poor, water is applied, and bleeding occurs even when stored under high humidity. There is. For example, JP-A-60-171143 and JP-A-59-207277 disclose water-soluble inks containing a water-soluble polymer or a water-soluble substance having an ionic hydrophilic group on a substrate. Although a recording material provided with an ink absorbing layer containing a polyhydric alcohol-soluble substance is disclosed, its water resistance is not sufficient. JP-A-56-58869 discloses a method for improving water resistance, for example, a method of recording an ink jet on a recording sheet coated with a water-soluble polymer and then insolubilizing the water-soluble high molecule. However, it is not practical.

—On the other hand, an excellent inn containing a polyalkylene oxide resin as an ingredient Resin compositions and recording sheets for inkjet recording materials have been found (Japanese Patent Application Laid-Open No. 9-1920, Japanese Patent Application No. 7-324264, Japanese Patent Application Laid-Open No. 8-67064). No.). However, along with the diversification of inks, the development of inks with higher ink absorption speed, higher wet and heat resistance and high water resistance of recorded images, and high wet and heat resistance and high water resistance of the ink fixing layer itself are desired. I have.

 In addition, transparency of ink fixing notification is required for OHP sheets and the like.

 Furthermore, as a method of manufacturing a recording material for an aqueous ink jet, a method of coating an ink fixing layer on a plastic sheet is currently generally employed. In this case, the transparency and storage stability of the coating liquid are used. Good properties are desired. On the other hand, in order to obtain a dry film without using a solvent, a processing method based on thermoplastic resin, such as thermal lamination or inflation, is also desired.

 The present invention has been made to solve the above-described problems in the ink jet recording material, and a first object of the present invention is to provide an ink jet recording material having excellent processability, particularly, a high ink fixing speed and a high recording speed. An object of the present invention is to provide a resin composition for a recording material that is optimal for ink jet recording using an aqueous ink having excellent wet heat resistance and water resistance of an image.

 A second object of the present invention is to dissolve in a solvent and then coat the ink to increase the fixing speed of the ink, to provide excellent wet heat resistance and water resistance of the recorded image, and to improve the transparency of the ink fixing layer. An object of the present invention is to provide a recording material resin composition most suitable for recording.

A third object of the present invention is to improve the fixing speed of the ink, the wet heat resistance and the water resistance of the recorded image, and the ink fixing layer itself with the wet heat resistance and the water resistance, as well as heat lamination and inflation. Water with excellent processability It is an object of the present invention to provide a recording material resin composition which is most suitable for ink jet recording using a hydrophilic ink.

 A further object of the present invention is to provide an ink jet recording material comprising such a resin composition as a constituent element. Disclosure of the invention

 The present inventors have conducted intensive studies to achieve the above object, and as a result, by using a cross-linked polyalkylene oxide resin in combination with a specific polyamide resin and a specific cationic polymer, good processability was obtained. It has been found that it is possible to provide a resin composition for a recording material that is excellent in water absorption ink jet recording that has excellent ink absorption ability, clear images, and excellent wet heat resistance and water resistance of recorded images. By using an oxide resin in combination with a specific cationic polymer, the ink absorption ability is excellent, the image is clear, the recorded image has excellent heat and moisture resistance, and the ink fixing layer has excellent transparency. We have found that we can provide a resin composition for recording materials that is optimal for ink jet recording. Furthermore, we have found that a crosslinked polyalkylene oxide resin and a specific ethylene copolymer resin can be used. When used in combination with a specific cationic polymer, it has excellent ink absorption capacity, clear recorded images, excellent moisture-heat resistance and water resistance of recorded images, and the ink fixing layer itself has moisture-heat resistance and water resistance. The present inventors have found that it is possible to provide a resin composition for a recording material that is excellent in water resistance and excellent in processability such as thermal lamination inflation, and is most suitable for aqueous ink jet recording, and has completed the present invention.

That is, in the first aspect, the present invention relates to the first embodiment, wherein 13 to 95% by weight of the crosslinked polyalkylene oxide resin, 3 to 80% by weight of the polyamide resin, and 1 to 50% by weight of the cationic polymer. And an ink jet recording material comprising: It provides a resin composition for use.

 In the first aspect of the present invention, the crosslinked polyalkylene oxide resin has excellent ink absorption performance and excellent clarity of a recorded image, and the polyamide resin has excellent wet heat resistance and excellent water resistance. Is exhibited. In addition to this, for example, when a cationic polymer having a sulfonic acid ion is used, the sulfonic acid ion and the sulfonic acid ion in the ink easily undergo an exchange reaction, so that the ink has excellent affinity and fixability with the ink. It is considered that the characteristics are exhibited and a synergistic effect can be obtained without losing the advantages of each other.

 In addition, the present invention provides the ink-jet recording material according to the second aspect, which comprises 30 to 99% by weight of a crosslinked polyalkylene oxide resin and 1 to 70% by weight of a cationic polymer. It provides a resin composition for use.

 In the second embodiment of the present invention, the crosslinked polyalkylene oxide resin has excellent ink absorption performance, excellent clarity of a recorded image, and excellent transparency of an ink fixing layer, and a cationic polymer anion. The ink and the anion in the ink easily exchange reaction with each other, and the ink has excellent affinity and excellent fixability, so that even when these are used in combination, they exhibit a synergistic effect without losing the advantages of each other. It is thought that it is.

 According to the second aspect of the present invention, it is excellent for ink jet recording which is excellent in ink absorbing ability, clear in image, excellent in wet heat resistance and water resistance of a recorded image, and excellent in transparency of an ink fixing layer. A resin composition for a recording material can be provided. Furthermore, the present invention provides, in the third embodiment, a polyalkylene oxide resin having 13 to 95 weight%, an ethylene copolymer resin having 3 to 80% by weight, and a cationic polymer having 1 to 95% by weight. It is intended to provide a resin composition for an ink jet recording material, characterized by containing 50% by weight.

In the composition according to the third aspect of the present invention, there are provided (1) a crosslinked polyalkylene Excellent thermal processing properties and excellent ink absorption performance of the oxide resin, excellent clarity of recorded images, (2) Excellent moisture-heat resistance, water resistance, and transparency of the ethylene copolymer resin (3) The affinity between the anion portion of the cationic polymer and the anion in the ink is easily exchanged with the ink, and the ink has excellent fixing properties. It is considered that the synergistic effect is exhibited without losing. Hereinafter, the present invention will be described in detail in the order of the first embodiment to the third embodiment.

 [First embodiment]

Is the first use in a manner crosslinked polyalkylene O sulfoxides榭脂of the present invention, a polyalkylene O, dimethylsulfoxide, and a diol, obtained by reacting at Isoshianeto compound, 1 7 0, 5 O kgZcm 2 weight under A resin having a melt viscosity of 200 to 200,000 boilers and a water absorption capacity (g pure water Zg resin) of 10 to 45 gZg is preferably used.

 If the melt viscosity is less than 2000 voids and if the water absorption capacity exceeds 45 gZg, the wet heat resistance and water resistance of the recorded image are undesirably reduced. In addition, if the contact viscosity exceeds 200,000 voids and the water absorption capacity is less than 1 OgZg, the compatibility with the polyamide-fatty-cationic polymer becomes poor, and the film surface during film processing is deteriorated. It is not preferable because problems such as deterioration of the condition occur.

The proportion of the polyalkylene oxide resin is usually 13 to 95% by weight, preferably 20 to 90% by weight, based on the total weight of the resin composition of the first embodiment of the present invention. is there. If it is less than 13% by weight, the initial printability deteriorates, and if it exceeds 95% by weight, the wet heat resistance and the water resistance are undesirably reduced. Polyalkylene oxide constituting the crosslinked polyalkylene oxide resin As these, those having a weight-average molecular weight of 500 to 500,000 are preferably used, and examples thereof include polyethylene oxide, polypropylene oxide, ethylene oxide donopropylene oxide copolymer, polybutylene oxide, and polybutylene oxide. Mixtures and the like can be mentioned. In particular, polyethylene oxide, polypropylene oxide, ethylene oxide Z propylene oxide copolymer, or a mixture thereof having a weight average molecular weight of 2000 to 100,000 or a mixture thereof is preferably used. The weight average molecular weight is less than 500. In this case, the melt viscosity of the obtained cross-linked polyalkylene oxide resin is too low, and if the weight average molecular weight exceeds 500,000, the melt viscosity becomes extremely high. It is not preferable because it causes a problem in compatibility.

 Examples of the diol that constitutes the crosslinked polyalkylene oxide resin together with the polyalkylene oxide include organic compounds having two hydroxyl groups (1 OH) in the same molecule, for example, ethylene glycol, diethylene glycol, triethylene glycol, and tetraethylene glycol. Ethylene glycol, propylene glycol, dipropylene glycol, trimethylene glycol, 1,3-butanediol, 2,3-butanediol, 1,4-butanediol, 1.5-pentanediol, hexylene glycol, octylene glycol Examples include lenglycol, glyceryl monoacetate, glyceryl monobutylate, 1,6-hexanediol, 1.9-nonanediol, bisphenol A, and the like. Preferably, ethylene glycol, propylene glycol, 1,4-butanediol, 1,6-hexanediol, 1.9-nonanediol and the like are used.

Examples of the above-mentioned isocyanate compound used for crosslinking the polyalkylene oxide and the diol include organic compounds having two isocyanate groups in the same molecule, for example, xylylene diisocyanate (XDI), 4,4′- Diphenylmethane diisocyanate (MDI), hexamethylene diisocyanate, 1,8-dimethylbenzoyl 1,4,4-diisocyanate, 2,4-tolylene diisocyanate (TDI), dicyclo Polyols such as xylol 4,4'-diisocyanate (HMD I), TDI trimer, polymethylenepolyphenylisocyanate, and trimethylolpropane are added with a molar number of diisocyanate corresponding to the number of active hydrogens. Examples thereof include a urethane succinate compound and a polyisocyanate product obtained by the reaction. Preferably, 4,4′-diphenylmethane diisocyanate (MDI), hexamethylene diisocyanate, 2,4-tolylene diisocyanate (TDI), dicyclohexyl-4.4′-diisocyanate (HMD I) or the like is used.

 The ratio of the above-mentioned polyalkylene oxide, diol and isocyanate compound to be used is the ratio of the sum of the number of terminal hydroxyl groups of the polyalkylene oxide and the number of hydroxyl groups of the diol to the number of isocyanate groups of the isocyanate compound (R value) (-NCO Group Z—OH group) is in the range of 0.5 to 2.0, preferably in the range of 0.8 to 1.7. When the R value is less than 0.5, the crosslink density becomes low and a crosslinked polyalkylene oxide resin having sufficient solvent absorbency cannot be obtained.On the other hand, when the R value exceeds 2.0, the crosslink density becomes high. At the same time, the melt viscosity increases and the processability during molding deteriorates, which is not preferable.

The number of moles of polyalkylene oxide can be determined by dividing the weight of the polyalkylene oxide by the weight average molecular weight. The diol is added during the crosslinking reaction between the polyalkylene oxide and the isocyanate compound. By adding a diol, the melt viscosity of the obtained crosslinked polyalkylene oxide can be reduced, and the processability is improved. The amount of the isocyanate compound used depends on the type of the isocyanate compound and the reaction conditions, but is generally from 0.5 to 80 parts by weight, preferably from 1 to 100 parts by weight, based on 100 parts by weight of the polyalkylene oxide. 50 fold: within the range of ft. If the amount is less than 0.5 part by weight, the cross-linking density of the obtained cross-linked polyalkylenoxide resin will be low, and sufficient film strength will not be obtained. The crosslinking density of the crosslinked polyalkylene oxide resin becomes too high, and the processing temperature when forming into a film becomes high, which makes molding difficult.

 As a method of reacting a polyalkylene oxide and a diol with an isocyanate compound, a method of reacting in a solution using an appropriate solvent is generally used. The reaction can be carried out in a dispersed state, or both can be mixed in a powder or solid state and then heated to a predetermined temperature and reacted.However, from the viewpoint of industrial practice, each raw material is continuously combined in a molten state. Preferred is a method in which the raw materials are supplied and mixed and reacted in a multi-screw extruder.

 The reaction temperature of the above reaction is usually 50 to 21 CTC. The reaction can be promoted by adding a small amount of triethylamine, triethanolamine, dibutyltin diacetate, dibutyltin dilaurate, stannasoctoate, triethylenediamine, or the like to this reaction system.

As the polyamide resin used in the first embodiment of the present invention, a resin having a crystallinity of 0 to 50% and a melting point or Tg (glass transition temperature) of 70 to 230 ° C. is preferably used. . Specifically, 6 nylon, 66 nylon, 8 nylon, 11 nylon, 12 nylon, 6 nylon 12 copolymer nylon, 6 Z66 / 12 copolymer nylon, amorphous nylon, transparent nylon Polyether, which is a copolymer of the above polyamide with resins, polyethylene glycol, polypropylene glycol, polyether such as polytetramethylene glycol, etc. And a polyimide copolymer. If the degree of crystallinity exceeds 50% and the melting point or Tg exceeds 230 ° C, the compatibility with the crosslinked polyalkylene oxide will deteriorate or the processing temperature will increase, resulting in decomposition of the crosslinked polyalkylene oxide. And the like may occur, which is not preferable. The addition ratio of the polyamide resin is usually 3 to 80% by weight, preferably 5 to 70% by weight. When the addition ratio is less than 3% by weight, the effect of improving the moist heat resistance and the water resistance is small. On the other hand, when the addition ratio is more than 80% by weight, the absorption performance of the ink is reduced and a clear image cannot be obtained. It is not preferable.

 The cationic polymer used in the first embodiment of the present invention may be any polymer containing a cationic group such as an amino group, or a modified product thereof, or a quaternary ammonium base in the main chain or side chain of the polymer. For example, an acrylamide copolymer having an acrylamide structural unit represented by the following general formula (1), and a maleimide copolymer having a cationized maleimide structural unit represented by the following general formula (2) Examples of the polymer include a maleimide copolymer having an olefin structural unit containing a cationized maleimide in a side chain represented by the following general formula (3). Among them, a maleimide copolymer having a olefin structure unit containing a cationized maleimide in the side chain represented by the general formula (3) is preferable.

 General formula (1):

(Wherein, R ¹ is an alkylene group having 2 to 8 carbon atoms, R ² and R ³ are each an alkyl group having 1 to 4 carbon atoms, R ⁴ is an alkyl group having 1 to 12 carbon atoms, and 6 to 12 carbon atoms. of § reel alkyl group or alicyclic alkyl group having 6 to 12 carbon atoms, X is a halogen atom, CH ₃ OS0 ₃ or C ₂ H ₅ OS0 _3.)

 General formula (2):

^{(Wherein, R!, R 2, R} 3 are as defined above, is substituted alkyl group having 1 to 12 carbon atoms, § reel alkyl group having 6 to 12 carbon atoms, an alkyl group Moyore, carbon X is the same as described above, wherein the epoxy group has 2 to 4 or an alicyclic alkyl group having 6 to 12 carbon atoms.

 General formula (3):

(In the formula, R ^] , R ² , R ³ , and RX are the same as above, and R ⁵ represents a hydrogen atom or a methyl group. M represents 0 or 1.) The polymers represented by the above general formulas (1), (2) and (3) are known, for example, Japanese Patent Application Laid-Open Nos. Hei 5-32026 and Hei 5-194646. It is manufactured by a method disclosed in Japanese Patent Publication No. 0, Japanese Unexamined Patent Publication No. 5-194641, etc. Specific examples of the cationic polymer used in the first embodiment of the present invention include a maleimide copolymer having an olefin structure unit containing a cationized maleimide in the side chain represented by the general formula (3). Examples thereof include Leo Rex manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.

 The proportion of the cationic polymer to be added is 1 to 50% by weight, preferably 1 to 40% by weight. When the addition ratio is less than 1% by weight, the effect of improving the moist heat resistance and the water resistance is small. On the other hand, when the amount exceeds 50% by weight, the effect corresponding thereto is not obtained, and the workability is rather deteriorated. Not preferred.

The resin composition for a recording material according to the first aspect of the present invention is a method for processing a cross-linked polyalkylene oxide resin, a polyamide resin and a cationic polymer, which is generally used, such as an extruder, a kneader, and a roll. It is obtained by kneading with a machine, but a cationic polymer may be added in advance during the production of the crosslinked polyalkylene oxide resin. The obtained resin composition is formed into a sheet by inflation molding and T-die extrusion, whereby an ink jet recording material can be obtained. In addition, the composition and a thermoplastic resin such as PP or LDPE are formed into a sheet having the thermoplastic resin as a support layer by inflation molding and co-extrusion by T-die extrusion to obtain an ink jet recording material. Can also. At this time, polyethylene, polypropylene, polyvinyl chloride, ethylene acrylate, ethylene methacrylate, ethylene-acrylic acid copolymer, ethylene-monoacetic acid, etc. were used to increase the adhesion between the support layer and the ink fixing layer. Vinyl copolymer, acrylonitrile-styrene-butadiene copolymer, ethylene-acrylate-maleic acid terpolymer, orolefin-based thermoplastic elastomer Thermoplastic resins such as toma, styrene-based thermoplastic elastomer, and urethane-based thermoplastic elastomer may be added to the composition alone or in an appropriate mixture of two or more.

 Further, depending on the purpose, for example, heat stabilizers such as ultrafine silica, talc, zeolite, alumina, and titanium oxide, antioxidants, pigments, and fillers can be added in small amounts.

 [Second aspect]

As in the first embodiment, the crosslinked polyalkylene oxide resin used in the second embodiment of the present invention is obtained by reacting a polyalkylene oxide and a diol with an isocyanate compound. C, a resin having a melt viscosity under a load of 5 Okcm ^{2 of} 200 to 200,000 voise and a water absorption capacity (g pure water / g resin) of 10 to 45 g Z g is preferred. Used.

 When the melt viscosity is less than 2000 voids and when the water absorption capacity exceeds 45 g Z g, the wet heat resistance and water resistance of the recorded image are undesirably reduced. If the melt viscosity exceeds 200,000 voids and the water absorption capacity is less than 1 Og Zg, problems such as a decrease in the solubility in the solvent and deterioration of the coated surface after processing may occur. Not preferred.

 The proportion of the crosslinked polyalkylene oxide resin is usually 30 to 99% by weight, preferably 40 to 95% by weight, based on the total weight of the resin composition of the second embodiment of the present invention. is there. If the amount is less than 30% by weight, the initial printability is poor, and it takes a long time to dry the ink. If the amount is more than 99% by weight, the wet heat resistance and the water resistance are undesirably reduced.

As the polyalkylene oxide constituting the crosslinked polyalkylene oxide resin, those having a weight average molecular weight of 500,000 to 500,000 are preferably used as in the first embodiment, and examples thereof include polyethylene oxide, Polypropylene Examples include side, ethylene oxide z propylene oxide copolymer, polybutylene oxide, and mixtures thereof. In particular, polyethylene oxide, polypropylene oxide, ethylene oxide Z-propylene oxide copolymer having a weight average molecular weight of 2000 to 100,000, or a mixture thereof is preferably used. When the weight-average molecular weight is less than 500, the water-absorbing ability of the obtained crosslinked polyalkylene oxide resin is too high, and when the weight-average molecular weight exceeds 500,000, the solubility in a solvent is undesirably reduced.

 Examples of the diol which constitutes the polyalkylene oxide resin together with the polyalkylene oxide include, as in the first embodiment, an organic compound having two hydroxyl groups (1 OH) in the same molecule, for example, ethylene glycol, Dethylene glycol, triethylene glycol, tetraethylene glycol, propylene glycol, dipropylene glycol, trimethylene glycol, 1,3-butanediol, 2,3-butanediol, 1,4-butanediol, 1,5-pentane Examples thereof include diol, hexylene glycol, octylene glycol, glyceryl monoacetate, glyceryl monobutyrate, 1.6-hexanediol, 1.9-nonanediol, and bisphenol A. Preferably, ethylene glycol, propylene glycol, 1,4-butanediol, 1,6-hexanediol, 1,9-nonanediol and the like are used.

As in the first embodiment, the isocyanate compound used for crosslinking the polyalkylene oxide and the diol may be an organic compound having two isocyanate groups in the same molecule, for example, xylylenediisobutane. Cyanate (XDI), 4,4'-diphenylmethanediisocyanate (MDI), hexamethylene diisocyanate, 1.8-dimethylbenzol-1,4-didisocyanate, 2,4-toluene Dissociate (TD 1), Jishik Mouth hexyl-4. 4 'diisocyanate (HMD I), TDI trimer, polymethylene polyphenylisocyanate, trimethylolpropane, and other polyols have moles of diisocyanate corresponding to the number of active hydrogens And urethane isocyanate compounds and polyisocyanate adducts obtained by reacting the above. Preferably, 4,4'-diphenylmethanedidisocyanate (MDI), hexamethylenedidisocyanate, 2.4-tolylenediisocyanate (TDI), dicyclohexylyl4,4'diene Isocyanate (HMD I) or the like is used.

 The proportion of the polyalkylene oxide, diol and isocyanate compound used is, as in the first embodiment, the sum of the number of terminal hydroxyl groups of the polyalkylene oxide and the number of hydroxyl groups of the diol, and the isocyanate group of the isocyanate compound. Is selected in a range where the ratio (R value) (one NCO group and one OH group) is 0.5 to 2.0, and preferably 0.8 to 1.7. When the R value is less than 0.5, the crosslink density becomes low and a crosslinked polyalkylene oxide resin having sufficient solvent absorbency cannot be obtained.On the other hand, when the R value exceeds 2.0, the crosslink density becomes high. In addition, the melt viscosity increases and the processability during molding deteriorates, which is not preferable.

 The number of moles of the polyalkylene oxide can be determined by dividing the weight by the weight average molecular weight. When a diol is added, it is added during the crosslinking reaction between the polyalkylene oxide and the isocyanate compound. By adding the polyol, it is possible to reduce the melt viscosity of the obtained tanachi polyalkylene oxide, and the processability is improved.

The amount of the isocyanate compound used varies depending on the type of the isocyanate compound and the reaction conditions as in the first embodiment, but is generally 0.5 to 80 parts by weight based on 100 parts by weight of the polyalkylene oxide. Preferably Ranges from 1 to 50 parts by weight. When the amount is less than 0.5 part by weight, the obtained crosslinked polyalkylene oxide resin has a low crosslink density, so that sufficient film strength cannot be obtained. In such a case, the crosslinking density of the obtained crosslinked polyalkylene oxide resin becomes too high, so that the solubility in the solvent is lowered and the film forming property is lowered, which is not preferable.

 As a method of reacting a polyalkylene oxide and a diol with an isocyanate compound, a method of reacting in a solution using a suitable solvent is generally used. The reaction can be carried out in a dispersed state, or both can be mixed in a powder or solid state and then heated to a predetermined temperature for the reaction.However, from the viewpoint of industrial practice, each raw material is continuously melted. , And mixed and reacted in a multi-screw extruder.

 The reaction temperature of the above reaction is usually 50 to 210 ° C. The reaction can be promoted by adding a small amount of triethylamine, triethanolamine, dibutyltin diacetate, dibutyltin dilaurate, stannasoctoate, triethylenediamine, or the like to the reaction system. .

Examples of the cationic polymer used in the second embodiment of the present invention include a methacrylate copolymer having a methacrylate structural unit represented by the following general formula (4), and a methacrylate copolymer represented by the following general formula (5). A vinylbenzoyl-based copolymer having a vinylbenzoyl structure unit represented by the following general formula (3), except that the definition of R ⁴ is different. And a maleimide copolymer having an orefin structural unit. These may be used alone or as a mixture of two or more.

—General formula (4):

(Wherein, R ¹ is an alkylene group having 2 to 8 carbon atoms, R ² and R ³ are each an alkyl group having 1 to 4 carbon atoms, R ⁴ is an epoxy group having 2 to 4 carbon atoms, X is a halogen atom, shows a CH ₃ OS0 ₃ or C ₂ H ₅ OS0 _3.)

 General formula (5):

(. Wherein, RR ² and R ³ are each an alkyl group having 1 to 12 carbon atoms, X is a halogen atom, CH ₃ OS0 ₃ or C ₂ H ₅ OS0 ₃₎ - general formula (3):

(Wherein, RR ² , R ³ , R ⁴ , R ⁵ , X and n are the same as defined in the first embodiment.)

 — Specific examples of the methacrylate copolymer having a methacrylate structural unit represented by the general formula (4) include “Polymalon” (manufactured by Arakawa Chemical Co., Ltd.). Specific examples of the vinylbenzoyl-based copolymer having a vinylbenzoyl structural unit represented by the general formula (5) include, for example, “Sai Dubbs” (manufactured by Nippon Chemical Co., Ltd.), and the general formula (3). Specific examples of the maleimide-based copolymer include, but are not limited to, "Leorex" (manufactured by Daiichi Kogyo Seiyaku Co., Ltd.). The proportion of the cationic polymer to be added is generally 1 to 70% by weight, preferably 5 to 60% by weight. If the addition ratio is less than 1% by weight, the effect of improving moisture and heat resistance and water resistance is small. On the other hand, if it is used at more than 70% by weight, the effect corresponding thereto is not obtained, and instead the film forming property and transparency are improved. It is not preferable because the property is lowered. The resin composition for a recording material according to the second embodiment of the present invention is dissolved in a solvent such as alcohol, alcohol-free water, or an organic solvent, and then applied to a substrate such as paper or a transparent plastic film or a cellulose derivative, and dried. To form an ink fixing layer, and to provide an ink jet recording material having such an ink fixing layer. At this time, the polystyrene alkylene oxide resin and the cationic polymer are each dissolved in a solvent and then mixed together, or both are kneaded with an extruder, a kneader, a roll, or the like, and then dissolved in the solvent. Good.

Examples of the above solvents include methanol, methanol water, ethanol, ethanol water, n-propanol, n-propanol Z water, isopropanol, isopropanol / water, toluene, quinylene, ethylene glycol monomethyl ether, and ethylene glycol mono. Ethyl ether, ethylene glycol monopropyl ether, tetrahydrofuran, acetone, methyl The solvent may be appropriately selected from ethyl ketone, cyclohexanone, ethyl acetate, butyl nitrate, acetonitrile, dimethylformamide, etc., alone or as a mixed solvent.

 Examples of the above transparent plastic film include polyethylene terephthalate, polypropylene, polyethylene, ethylene / vinyl acetate copolymer, ethylene / ethyl acrylate copolymer, ethylene / methacrylic acid copolymer, and ethylene Z acrylate / maleic anhydride copolymer. There are polymers, nylon resins, polyvinyl chloride, etc., which may be surface-treated to improve adhesiveness or biaxially stretched film to improve transparency.

 The thickness of the ink fixing layer is usually 1 to 200 im, preferably 5 to 100 im. If it is thinner than 1 // m, the ink absorption will decrease.On the other hand, if it is thicker than 200 m, not only the effect corresponding to it will not be obtained, but also the transparency of the film may decrease, Not preferred. Further, generally used additives such as a fixing agent and a bleeding preventive agent can be appropriately compounded. Further, depending on the purpose, a small amount of a heat stabilizer, an antioxidant, a pigment, a filler, for example, ultrafine silica, talc, zeolite, alumina, titanium oxide and the like can be added.

 [Third aspect]

As in the first embodiment, the crosslinked polyalkylene oxide resin used in the third embodiment of the present invention is obtained by reacting a polyalkylene oxide and a diol with an isocyanate compound. C, 5 O kg / cm ² pressurized melt viscosity at heavy under is 2 0 0 0-2 00 000 Boise, water capacity (8 Junmizuno 8榭脂) is 1 0~4 5 g / g of resin Is preferably used.

When the melt viscosity is less than 2000 voids and when the water absorption capacity exceeds 45 g Z g, the wet heat resistance and water resistance of the recorded image are undesirably reduced. If the melt viscosity exceeds 200,000 voids and the water absorption capacity is less than 10 g Z g, the compatibility with the ethylene copolymer resin and the cationic polymer becomes poor, and the It is not preferable because problems such as deterioration of the film surface state occur.

 The proportion of the citrus polyalkylene oxide resin is usually 13 to 95% by weight, preferably 20 to 90% by weight, based on the total weight of the resin composition of the third embodiment of the present invention. is there. If the amount is less than 13% by weight, the initial printability is deteriorated. If the amount is more than 95% by weight, the moist heat resistance and the water resistance of the ink fixing layer are unfavorably reduced.

 As the polyalkylene oxide constituting the crosslinked polyalkylene oxide resin, those having a heavy S average molecular weight of 500,000 to 500,000 are preferably used as in the first embodiment, for example, polyethylene oxide. And polypropylene oxide, an ethylene oxide / propylene oxide copolymer, a polybutylene oxide, and a mixture thereof. In particular, polyethylene oxide, polypropylene oxide, ethylene oxide-no-propylene oxide copolymer having a weight average molecular weight of 200,000 to 100,000, or a mixture thereof is preferably used. When the weight average molecular weight is less than 500, the melt viscosity of the obtained cross-linked polyalkylene oxide resin is too low, and when the weight average molecular weight exceeds 500,000, the melt viscosity becomes extremely high. Is also not preferred because it causes a problem in compatibility with other resins.

As in the first embodiment, the diol that constitutes the polyalkylene oxide resin together with the polyalkylene oxide is an organic compound having two hydroxyl groups (1 OH) in the same molecule, for example, ethylene glycol, Dimethylene glycol, triethylene glycol, tetraethylene glycol, propylene glycol, dipropylene glycol, trimethylene glycol, 1,3-butanediol, 2.3-butanediol, 1,4-butanediol, 1,5-pentanediol, hexylene glycol, octylene glycol, glyceryl monoacetate, glyceryl monobutyrate, 1,6-hexanediol, i, 9-nonanediol, bisphenol A and the like can be mentioned. Preferably, ethylene glycol, propylene glycol, 1.4-butanediol, 1,6-hexanediol, 1,9-nonandiol and the like are used.

 As the isocyanate compound used for crosslinking the polyalkylene oxide and the diol, as in the first embodiment, an organic compound having two isocyanate groups in the same molecule, for example, xylylene diisocyanate Nate (XD I), 4,4'-Diphenylmethane diisocyanate (MDI), Hexamethylene diisocyanate, 1,8-Dimethylbenzol-1,4-diisocyanate, 2,4 —Polyols such as tolylene disocyanate (TD I), dicyclohexyl 4,4 'diisocyanate (HMD I), trimer of TDI, polymethylene polyphenylisocyanate, and trimethylolpropane Urethane isocyanate compounds obtained by reacting a diisocyanate in a number of moles corresponding to the number of active hydrogens, polyisocyanate products, etc. Can. Preferably, 4.4 'diphenyl methane diisocyanate (MDI), hexamethylene diisocyanate, 2,4-tolylene diisocyanate (TDI), dicyclohexane 4,4' diisocyanate Nate (HMD I) and the like are used.

The ratio of the polyalkylene oxide, diol and isocyanate compound used is determined by the ratio of the sum of the number of terminal hydroxyl groups of the polyalkylene oxide and the number of hydroxyl groups of the diol to the number of isocyanate groups of the isocyanate compound (R value). NCO group Z—OH group) 0.5 ~ 2.0 force, preferred Is selected in the range of 0.8 to 1.7. If the R value is less than 0.5, the crosslink density is low and a crosslinkable polyalkylene oxide resin having sufficient solvent absorbency cannot be obtained.On the other hand, if the R value exceeds 2.0, moles of undesirable _c polyalkylene O sulfoxides for workability during melt viscosity becomes high molding is deteriorated with the crosslinking density is high, as in the first embodiment, by dividing the weight by the weight average molecular weight Can be obtained by When a diol is added, the diol is added at the time of the cross-linking reaction between the polyalkylene oxide and the isocyanate compound. By adding a diol, the melt viscosity of the obtained cross-linked polyalkylene oxide can be reduced, and the processability is improved. The use S of the above isocyanate compound varies depending on the type of the isocyanate compound and the reaction conditions.In general, 0.5 to 80 heavy parts, preferably 100 to 100 parts by weight of the polyalkylene oxide, preferably It is in the range of 1 to 50 parts by weight. If the amount is less than 0.5 part by weight, the cross-linking density of the obtained cross-linked polyalkylenoxide resin is low, and sufficient film strength cannot be obtained. It is not preferable because the crosslinking density of the polyalkylene oxide resin becomes too high and the processing temperature when forming into a film becomes high, which makes molding difficult.

 As a method of reacting a polyalkylene oxide and a diol with an isocyanate compound, a method of reacting in a solution using an appropriate solvent is generally used. The reaction can be carried out in a dispersed state, or the powder or solid can be mixed uniformly and then heated to a predetermined temperature for the reaction.However, from the point of view of industrial practice, the raw materials are continuously welded in a contact state. , And mixed and reacted in a multi-screw extruder.

The reaction temperature of the above reaction is usually 50 to 21 (TC. In this reaction system, triethylamine, triethanolamine, dibutyltin diacetate, The reaction can be promoted by adding a small amount of dibutyltin dilaurate, stannasquatate, triethylenediamine, or the like.

 As the ethylene copolymer resin used in the third embodiment of the present invention, a resin having a melting point or Tg (glass transition point) of 40 to 230 is preferably used. C Specifically, ethylene vinyl monoacetate Copolymer, Ethylene-vinyl acetate copolymer genide, Ethylene monoacrylic acid copolymer, Ethylene methacrylic acid copolymer, Ethylene monomethyl methacrylate copolymer, Ethylene ethyl acrylate copolymer, Ethylene acrylic acid An ester monomaleic acid terpolymer is exemplified. Further, these ethylene copolymers may be used alone or in combination of two or more. If the melting point or Tg exceeds 230 ° C, the compatibility with the crosslinked polyalkylene oxide may deteriorate, or the heating temperature may increase, resulting in decomposition of the crosslinked polyalkylene oxide, decomposition of the cationic polymer, etc. Is not preferred because of the possibility that The addition ratio of the ethylene copolymer resin is usually 3 to 80% by weight, preferably 5 to 70% by weight. When the addition ratio is less than 3% by weight, the effect of improving the moist heat resistance and the water resistance of the ink fixing layer is small. On the other hand, when it exceeds 80%: £%, the absorption performance of the ink is reduced and a clear image is formed. It is not preferable because it cannot be obtained.

The cationic polymer used in the third embodiment of the present invention may be any polymer as long as it contains a cationic group such as an amino group or a modified product thereof, or a quaternary ammonium base in the main chain or side chain of the polymer. For example, a maleimide copolymer having the same cationized maleimide structural unit represented by the following general formula (2) as in the first embodiment, the following general formula (3) as in the first embodiment A maleimide-based copolymer having a olefinic structural unit containing a cationized maleimide in the side chain represented by the following formula, and a vinyl having a cationized vinylbenzoyl structural unit represented by the following general formula (5) as in the second embodiment Lupenzyl copolymers and the like can be mentioned. Above all, the following general formula

A maleimide copolymer having a olefinic structural unit containing a cationized maleimide in the side chain represented by (3), and a vinylbenzoyl copolymer having a cationized vinylbenzoyl structural unit represented by the following general formula (5) are provided. I like it.

 —General formula (2):

(Wherein RR ² , R ³ , R ⁴ and X are the same as defined in the first embodiment)

—General formula (3):

(Wherein, RR ² , R ³ , R ⁴ , X, R ⁵ and m are the same as defined in the first embodiment.) —General formula (5)

(Wherein RR ² , R ³ and X are the same as defined in the second embodiment.) Specific examples of the cationic polymer used in the third embodiment of the present invention include: As a maleimide-based copolymer having a olefin structure unit containing a cationized maleimide in the side chain represented by, for example, Leolex manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd., a cationized monomer represented by the general formula (5) Examples of the vinylbenzoyl copolymer having a vinylbenzoyl structural unit include Saidubs manufactured by Nippon Kagaku Co., Ltd.

 The proportion of the cationic polymer added is 1 to 50% by weight, preferably 1 to 40% by weight. If the addition ratio is less than 1% by weight, the effect of improving the moist heat resistance and the water resistance is small. On the other hand, if it is used in excess of 50% by weight, the effect corresponding thereto is not obtained, and the workability is rather reduced. However, it is not preferable because the water resistance of the ink fixing layer is reduced.

The resin composition for a recording material according to the third embodiment of the present invention comprises a general method such as an extruder, a double roll, a roll, or the like, which comprises a crosslinked polyalkylene oxide resin, an ethylene copolymer resin, and a cationic polymer. It is obtained by kneading with the processing machine used in the above, but a cationic polymer may be added in advance during the production of the crosslinked polyalkylene oxide resin. The obtained resin composition is subjected to inflation molding, An ink jet recording material can be obtained by molding into a sheet by T-die extrusion. Further, the composition and a thermoplastic resin such as PP, LDP, etc. are formed into a sheet using the thermoplastic resin as a supporting member by inflation molding, thermal lamination molding, and co-extrusion by T-die extrusion. G recording material. At this time, polyethylene, polypropylene, polyvinyl chloride, acrylonitrile-styrene-butadiene copolymer, and olefin-based thermoplastic elastomer were used to improve the adhesion between the support layer and the ink fixing layer. Thermoplastic resins such as styrene-based thermoplastic elastomers and urethane-based thermoplastic elastomers may be added to the composition singly or as a mixture of two or more.

 For further purposes, for example, small amounts of heat stabilizers such as ultrafine silica, talc, zeolite, alumina and titanium oxide, antioxidants, pigments and fillers can be added. BEST MODE FOR CARRYING OUT THE INVENTION

 Hereinafter, the present invention will be described in more detail with reference to Production Examples, Examples, and Comparative Examples, but the present invention is not limited to these Examples. Symbol A attached to the numbers of the production examples, examples and comparative examples indicates that it relates to the first embodiment of the present invention, symbol B indicates that it relates to the second embodiment, and symbol C indicates that it relates to the third embodiment. Is shown.

 The following test was conducted on the polyalkylene oxide resin obtained in the following Production Examples and the evaluation of the printing performance of the ink jet recording sheet using the resin composition for recording materials obtained in the Examples was as follows. Made by the way.

1. Test items and methods for cross-linked polyalkylene oxide resin (1) Water absorption capacity [g (pure water) (resin)]: Add 200g of cross-linked polyalkylene oxide resin to 200nil of pure water, stir for 24 hours, filter through a 200 mesh wire mesh, and after filtration The weight of the gel was defined as the water absorption capacity.

(2) Melt viscosity [Boyes: at 170 ° C, 5 OkgZcm ² weight conditions, was measured at the die lmm0x lramL orifice (Shimadzu Flow Tester CFT- 500 C).

 2. Evaluation items and method of printing performance of recording sheet

 (1) Drying speed: After printing an evaluation pattern (12 x 5 mm, black, magenta, cyan, yellow) using an Epson printer MJ-800C, 6 kgf with a push-pull gauge on the printing surface at 10-second intervals The time when the ink did not bleed was measured by applying a filter paper under pressure.

 (2) Printability: After printing the evaluation pattern (same as above) using an Epson printer MJ-800C, one dot of each color was applied to the microscope VH-59.

The diameter (m) and the circularity coefficient, which were enlarged 200 times with 00 (manufactured by KEYENCE), and the circularity coefficient were measured with an Image Analyzer-VI0 (manufactured by Toyobo). In this case, if the diameter is 100 m or less, the image does not change visually.If the diameter is 100 to 200 m, the image blurs slightly.If the diameter is 200 jum or more, the image clearly blurs visually. Can be determined.

 (3) Moisture and heat resistance of recorded images: After printing the evaluation pattern (same as above) with an Ebson printer MJ-800C, put it in a thermo-hygrostat at a temperature of 40 ° C and a humidity of 90%, and after 1 hour and 24 After a lapse of time, the state of the drop was enlarged to 200 times, and the diameter (m) and the circularity coefficient were measured with Image Analyzer-1 V10 (manufactured by Toyobo).

As above, if the diameter is 100 or less, there is no change in the image visually.If the diameter is 100 to 200 m, the image slightly blurs visually and becomes 200 m or more. It can also be visually confirmed that the image is clearly blurred.

 (4) Water resistance of recorded image: After printing an evaluation pattern (same as above) using Epson printer MJ-800C, the image was immersed in water for 5 minutes to determine the discoloration state.

 The evaluation criteria for water resistance are as follows:

 〇: No discoloration

 MM: Some discoloration

 X: Large discoloration

 With respect to the second embodiment, the following (5) was further evaluated.

(5) Transparency: The haze value of the unprinted portion was measured with a haze meter NDH-30OA manufactured by Nippon Denshoku Industries.

 With respect to the third aspect, the following (6) was further evaluated.

(6) Water resistance of the ink fixing layer: After dipping the recording sheet in pure water for 5 minutes, the recording sheet was rubbed with a bus pull gauge under a pressure of 5 kgf to measure the strength of the ink fixing layer.

 The evaluation criteria for water resistance are as follows:

 〇: No breakage of fixing layer

 Δ: Partial breakage of fixing layer

 : Breakage of fixing layer

 Production Example 1 A (Production Example 1 C)

100 parts by weight of sufficiently dehydrated polyethylene oxide with a weight average molecular weight of 20,000, 13.2 parts by weight of polypropylene oxide with a weight average molecular weight of 1000, 1.97 parts by weight of 1,4-butanediol 1.97 parts by weight and triethylene diamine 0. Two parts by weight were placed in a storage tank A equipped with a stirrer kept at 110 ° C., and a uniform mixture was obtained under a random gas atmosphere. Separately, 4,4'-diphenylmethane diisocyanate was placed in a storage tank B equipped with a stirrer kept at 50 ° C and stored under a nitrogen gas atmosphere. A twin-screw extruder in which the mixture in storage tank A and 4,4'-diphenylmethane diisocyanate in storage tank B were set to 110-140 ° C at constant speeds of 154.6 g / min and 12.lgZ, respectively. The mixture was mixed and reacted in an extruder, and a strand was discharged from the extruder outlet, and pelletized by a pelletizer to obtain a polyalkylene oxide resin.

The water-absorbing ability of the crosslinked polyalkylene oxide resin thus obtained was 2 Og, and the melt viscosity thereof (170. Cx5 OkgZcm ² ) was 20,000 voids. Production Example 2 A (Production Example 2C)

 100 parts by weight of fully dehydrated polyethylene oxide having a weight average molecular weight of 20,000, 100 parts by weight of an ethylene oxide propylene oxide (80Z20) copolymer having a weight average molecular weight of 3000, and 1,14-butanediol 4.14 weight And 0.1 part by weight of triethylenediamine were placed in a storage tank A equipped with a stirrer kept at 70 ° C., and a uniform mixture was obtained under a nitrogen gas atmosphere.

 Separately, 50 4,4'-diphenylmethane diisocyanate. C was placed in storage tank B with a stirrer kept warm and stored under a nitrogen gas atmosphere. The mixture in storage tank A and 4,4'-diphenylmethane diisocyanate in storage tank B were connected to a twin-screw extruder set at 140 to 170 ° C at a rate of 25 OgZ and 17.4 gZ by a metering pump, respectively. The mixture was mixed and reacted in an extruder, and a strand was taken out from the extruder outlet. The resulting mixture was pelletized by a pelletizer to obtain a polyalkylene oxide resin.

The water absorption capacity of the crosslinked polyalkylene oxide resin thus obtained is 1 Og, and the melt viscosity (17 OVx 50 kg / cm ² ) is 3000 Boys. Example 1 A

 Production Example 1 20 parts by weight of the crosslinked polyalkylene oxide resin obtained in A, 6/12 copolymerized nylon [melting point: 148 ° C, trade name: 7125U, manufactured by Ube Industries, Ltd.] 40 parts i-part And maleimide copolymer [trade name: Leorex AS-170, manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.] and 40 parts by weight with a 20 L Henschel mixer, and then mixed with 30 extruders (LZD = 25, Dalmer After kneading at 170 ° C) to form a pellet, lamination was performed using a PET film as a support layer by thermal lamination to obtain a sheet with an ink fixing layer thickness of 5, and the above performance evaluation was performed. .

 Example 2 A

 Production Example 1 Amorphous nylon [Tg: 125 ° C, trade name: Glypoli G21, manufactured by EMS Co.] was added to 50 parts by weight of a polyalkylene oxide resin obtained in A, and 40 parts by weight of maleimide. Copolymer [Trade name: Leorex AS-170, manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.] After mixing with 10 parts by weight with a 20 L Henschel mixer, 3 Omni extruder (L / D = 25, dalmage screw) After kneading at 170 ° C) to form a pellet, a sheet having a thickness of 120 m was obtained by inflation molding, and the above-described performance evaluation was performed.

 Example 3 A

Preparation Example 1 30 parts by weight of a polyether.polyamide copolymer [melting point: 158 ° C, trade name: Bax MV 1074, manufactured by Elphatochem] in 30 parts by weight of the polyalkylene oxide resin obtained in Example A And 40 parts by weight of a maleimide-based copolymer [trade name: Leorex AS-170, manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.] and a 30-L extruder (LZD = 25, Dalmage) (Screw, 170 ° C), pelletize, heat laminate By laminating high quality paper as a support layer by perforation processing, a sheet having a thickness of the ink fixing layer of 50 m was obtained, and the above-described performance evaluation was performed.

 Example 4 A

 Preparation Example 2 85 parts by weight of the crosslinked polyalkylene oxide resin obtained in A, 12 parts of nylon 12 [Tg: 55 ° C, trade name: Grillamide TR55LY, manufactured by AMS Co., Ltd.] and 10 parts by weight of maleimide The copolymer [trade name: Leorex AS-I-170, manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.] is mixed with 5 parts by weight in a 20 L Henschel mixer, and then mixed with a 30 mm extruder (L / D = 25, dalmage screw). After kneading at 170 ° C) to form a pellet, two-layer inflation molding was performed using PP as a support layer to obtain a sheet having an ink fixing layer having a thickness of 50 m, and the above-described performance evaluation was performed.

 Example 5 A

 Preparation Example 2 30 parts by weight of crosslinked polyalkylene oxide resin obtained in A, 6/12 copolymerized nylon [melting point: 148 ° C, trade name: 7125U, manufactured by Ube Industries, Ltd.] 30 parts by weight and polyether 'Polyamide copolymer 〖Melting point: 158, Trade name: Bax MV 1074, manufactured by Elphatochem] 30 parts by weight and maleimide copolymer [trade name: Leorex AS-170, Daiichi Kogyo Pharmaceutical Co., Ltd. 10 parts by weight, mixed with a 20 L Hensil mixer, kneaded with a 30 mm extruder (LZD = 25, dalmage screw, 170 ° C), pelletized, and then whitened by heat lamination. PET was laminated as a support layer to obtain a sheet having a thickness of the ink fixing layer of 50 / xm, and the above-described performance evaluation was performed.

 Comparative Example 1 A

Production Example 1 50 parts by weight of polyalkylene oxide resin obtained from A and 6/12 copolymerized nylon [melting point: 148, trade name: 7125U, Ube Industries, Ltd.] 50 parts by weight) were mixed with a 20-L Henschel mixer, kneaded with a 30 mm extruder (LZD = 25, Dal-Mage Screw, 170 ° C), and retlets were formed. A sheet having a thickness of 80 m was obtained, and the above-described performance evaluation was performed.

 Comparative Example 2 A

 10% by weight of the crosslinked polyalkylene oxide resin obtained in Production Example 1A was mixed with a polyether-polyamide copolymer [melting point: 158. C, trade name: Bax MV 1074, manufactured by Elphatochem] 85 parts by weight and maleimide copolymer [brand name: Leorex AS-170, manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.] 5 parts by weight 20 L After mixing with a Henschel mixer, kneading and pelletizing with a 30 mm extruder (LZD = 25, Dharmage screw, 170 ° C), laminating with PP as support by thermal lamination, and ink A sheet having a fixing layer thickness of 50 zm was obtained, and the above-described performance evaluation was performed.

 Comparative Example 3 A

 Production Example 1 50 parts by weight of a poly (polyalkylene oxide) resin obtained in A and 50 parts by weight of a maleimide copolymer [trade name: Leorex AS-170, manufactured by Dai-ichi Kogyo Yakuhin Co., Ltd.] Are mixed with a 20L Henschel mixer, kneaded with a 30mm extruder (L / D = 25, Dalma-ges-screw, 170 ° C), pelletized, and then subjected to heat lamination to use high-quality paper as a support layer. After lamination, a sheet with an ink fixing layer thickness of 50 m was obtained, and the performance was evaluated as described above.

 Comparative Example 4 A

12 Nylon [Melting point: 1-8 ° C, Product name: Grillamide L20, manufactured by EMS] 70 parts by weight, maleimide copolymer [Product name: Leorex AS-170, Daiichi Kogyo Pharmaceutical Co., Ltd.] 20 L Hensur mixer with 30 parts by weight After mixing, the mixture is kneaded with a 3 Omm extruder (LZD = 25, dalmage screw, 170 ° C), pelletized, and then formed into two layers of inflation using PP as a support layer. A sheet of 50 m was obtained and the above performance evaluation was performed.

The performance evaluation results of these examples and comparative examples are summarized in Table 1A.

Drying speed mark S: Remoist heat resistance (1 hour) Moisture heat resistance (24 hours) Water resistance

(Sec) B M C Y B M C Y B M C Y Example 1A 50 75 75 75 75 80 75 75 75 85 80 80 80 〇

 0.57 0.61 0.58 0.61 0.60 0.61 0.58 0.62 0.60 0.62 0.59 0.61

Example 2A 30 75 75 75 75 75 75 75 75 80 80 80 80 〇

 0.60 0.59 0.58 0.62 0.60 0.61 0.59 0.59 0.59 0.61 0.61 0.58

Example 3 40 75 75 75 75 80 75 75 75 85 80 80 80 〇

 0.57 0.59 0.59 0.61 0.62 0.63 0.60 0.60 0.63 0.58 0.57 0.60

Example 4A 15 75 75 75 75 75 75 75 75 80 80 80 80 〇

 0.60 0.61 0.57 0.63 0.61 0.61 0.58 0.59 0.59 0.60 0.56 0.60

Example 5A 40 75 75 75 75 75 75 75 75 80 80 80 80 〇

 0.58 0.59 0.64 0.61 0.59 0.59 0.58 0.60 0.58 0.59 0.58 0.59

Comparative Example 1Λ 30 85 90 90 85 95 100 100 95> 200> 200〉 200〉 200 △

 0.55 0.53 0.50 0.54 0.50 0.49 0.47 0.50

Comparative Example 2Λ 180 100 110 105 100 110 120 110 105〉 200〉 200〉 200〉 200 △

 0.05 0.06 0.07 0.05 0.04 0.05 0.05 0.05

Example of specific aperture 3A 35 90 85 90 90> 200> 200> 200> 200> 200> 200〉 200> 200 X

 0.51 0.55 0.51 0.65

Comparative Example 4Λ> 300 150 185 185 195> 200> 200> 200〉 200> 200> 200> 200> 200 X

 0.08 0.04 0.08 0.09

 Note: B, M, C, and Y for printability and heat and moisture resistance represent black, magenta, cyan, and yellow, respectively. Also shelves

 The upper part of the figure is a dot phantom (〃, the lower part is a circularity coefficient (closer to 1 is a perfect circle), and one is not measurable.

A As is clear from Table 1A, the resin composition for an ink jet recording material according to the first embodiment of the present invention has a high drying rate, a small initial dot diameter in printability, and a low dot heat resistance in wet heat resistance. No increase in diameter and no color loss in water resistance. Therefore, there is no change in the image even after each test, and the printability, moisture and heat resistance and water resistance are excellent.

 Production Example 1 B

 A fully dehydrated polyethylene oxide having a weight average molecular weight of 20000 100 JS parts, a propylene oxide having a weight average molecular weight of 1000 13.2 parts by weight, 1.97 parts by weight of 1,4-butanediol and 1..2 parts by weight of The mixture was placed in storage tank A equipped with a stirrer kept at a temperature of ° C, and a uniform mixture was obtained under a nitrogen gas atmosphere.

 Separately, 50 4,4'-diph: 1 nylmethanediisocyanate. C was placed in storage tank B with a stirrer kept warm and stored under a nitrogen gas atmosphere. The mixture in storage tank A and the 4,4'-diphenylmethane diisocyanate in storage tank B were connected to a twin-screw extruder set at 110-140 ° C at a rate of 154.6 gZ min and 12.1 g / min, respectively, by a metering pump. The mixture was mixed and reacted in an extruder, a strand was discharged from the extruder outlet, and pelletized by a pelletizer to obtain a polyalkylene oxide resin.

The water-absorbing ability of the crosslinked polyalkylene oxide resin thus obtained was 20 g / g, and the melt viscosity (170 × S Ok g Zcm ² ) was 20000 Voids.

 This was dissolved in n-propyl alcohol / water (7030 weight ratio) to a solid content of 10% by weight to obtain an n-propyl alcohol / water solution containing a crosslinked polyalkylene oxide resin.

Production Example 2 B Fully dehydrated polyethylene oxide with a weight average molecular weight of 20000 100 weights: ft part, 100 weight parts of an ethylene oxide propylene oxide (= 80/20) copolymer with a weight average molecular weight of 3000, 1,4-butane 4.14 parts by weight of the diol and 0.1 parts by weight of triethylenediamine were placed in storage tank A equipped with an agitator kept at 70 ° C, and a uniform mixture was obtained under a nitrogen gas atmosphere.

 Separately, 4,4'-diphenylmethane diisocyanate was placed in a storage tank B equipped with a stirrer kept at 50 ° C and stored under a nitrogen gas atmosphere. The mixture in storage tank A and 4,4'-diphenylmethane diisocyanate in storage tank B were continuously fed to a twin-screw extruder set at 140 to 170 ° C at a rate of 250 minutes and 17.4 minutes by a metering pump, respectively. The mixture was mixed and reacted in an extruder, and a strand was taken out from the extruder outlet, and pelletized by a pelletizer to obtain a crosslinked polyalkylene oxide resin.

The water-absorbing ability of the crosslinked polyalkylene oxide resin thus obtained was 10 g, and the melt viscosity (170 ° C., 50 kg / cm ² ) was 3000 Boys.

 This was dissolved in isopropyl alcohol water (80/20 weight ratio) to a solid content of 10% by weight to obtain an aqueous solution of isopropyl alcohol Z containing a polyalkylene oxide resin.

 Example 1 B

Production Example 1 Crosslinked polyalkylene oxide resin-containing n-propyl alcohol / water solution obtained in B and a cationic polymer [trade name: Polymeron 360 (20% by weight aqueous solution), manufactured by Arakawa Chemical Co., Ltd.] After mixing to obtain a solid content ratio of 80 to 20, the mixture is applied to a PET film (75 mm thick) using a bar coater and dried (perfection oven, 110 ° C x 5 minutes). hand, A film with a thickness of 10 m for the ink fixing was obtained, and the above-described performance evaluation was performed. Example 2 B

 A cationic polymer [trade name: Saidubs P-8CM, manufactured by Nippon Chemical Co., Ltd.] was dissolved in methanol to 10% by weight. Production Example After mixing the n-propyl alcohol aqueous solution containing the polyalkylene oxide resin obtained in IB and the cationic polymer solution at a solid content ratio of 50 to 50, the PET film ( (Film thickness: 75 / m) using a bar coater, and dried (Perfect oven, 110 ° C x 5 minutes) to obtain a film with a 20 m thick ink fixing layer, and the above-mentioned performance evaluation was performed. Was.

 Example 3 B

 Preparation Example 2 The crosslinked polyalkylene oxide resin-containing aqueous solution of isopropyl alcohol obtained in B and a cationic polymer [trade name: Polymalon 360 (20% by weight aqueous solution), manufactured by Arakawa Chemical Co., Ltd.] After mixing at a ratio of 95Z5, apply it to a PET film (thickness: 75 / m) using a bar coater and dry (perfect oven, 110 ° C x 5 minutes) to reduce the thickness of the ink fixing layer to 30. Was obtained, and the above-described performance evaluation was performed.

 Example 4 B

A cationic polymer [trade name: Leorex AS-170, manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.] was dissolved in methanol Z water (90/10 weight ratio) so as to be 5% by weight. After mixing the aqueous solution of the poly (alkylenoxide resin) -containing isopropyl alcohol Z obtained in Production Example 2B with the cationic polymer solution so that the solid content ratio becomes 7030, a white PET film ( The film was applied to a thickness of 75 m using a bar coater and dried (perfection oven, 110. Cx5 minutes) to obtain a film having a 25 m thick ink fixing layer, and the above-described performance evaluation was performed. Example 5 B

Cationic polymer [trade name: Leorex AS-170, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.] and cationic polymer [trade name: Cydaps P-8CM, manufactured by Nippon Chemical Co., Ltd.] 50/50) was dissolved in aqueous methanol (70 Z30 weight ratio) to a concentration of 5% by weight. The aqueous solution of isopropyl alcohol Z containing tachibana polyalkylene oxide resin obtained in Production Example 2B and the cationic polymer solution were mixed at a solid content ratio of 90/10, and then mixed. It was applied to paper (110 g / m ² ) using a bar coater, dried (perfect oven, 110 ° C x 5 minutes), and the thickness of the ink fixing layer was 30 μm. A sheet was obtained and the above-described performance evaluation was performed.

 Comparative Example 1 B

 A film was obtained in the same manner as in Example 1B except that the cationic polymer was not used in Example 1B, and the above-described performance evaluation was performed.

 Comparative Example 2 B

 Example 1 In Example 1B, a solid mixture of an aqueous n-propyl alcohol solution containing a polyalkylene oxide resin and a cationic polymer [trade name: Polymalon 360 (20% by weight aqueous solution), manufactured by Arakawa Chemical Co., Ltd.] A film was obtained in the same manner as in Example 1B except that the dividing ratio was 99.50.5, and the above-described performance evaluation was performed.

 Comparative Example 3 B

Example 1 In Example 1B, solid solution of a cross-linked polyalkylene oxide resin-containing n-propyl alcohol Z aqueous solution and a cationic polymer [trade name: Polymalon 360 (20% by weight aqueous solution), manufactured by Arakawa Chemical Co., Ltd.] A film was obtained in the same manner as in Example 1B except that the dividing ratio was set to 280, and the above-described performance evaluation was performed. Table 1B summarizes the performance evaluations of these examples and comparative examples. Comparison ^^

 Example 1 Printability Moisture / heat resistance (1 hour) Moisture / heat resistance (24 hours

(S) Β Μ C Υ Β Μ C Υ Β Μ C Υ (%) Example I 10 75 75 75 75 80 75 75 80 90 75 75 85 〇 7.4 IB 0.68 0.65 0.68 0.65 0.62 0.65 0.68 0.60 0.58 0.63 0.62 0.58

 20 75 75 75 75 75 75 75 75 80 75 75 80 〇 5.4

2B 0.69 0.68 0.68 0.68 0.68 0.68 0.67 0.65 0.67 0.67 0.65 0.64

 SEI 10 75 75 75 75 75 75 75 75 80 85 80 80 〇 7.8 3B 0.68 0.69 0.68 0.65 0.68 0.65 0.68 0.65 0.68 0.61 0.64 0, 65

 Example I 20 75 75 75 75 75 75 75 75 85 75 80 80 〇

 4B 0.68 0.69 0.65 0.68 0.62 0.65 0.65 0.67 0.60 0.64 0.62 0.64

 SEI 10 75 75 75 75 75 75 75 75 75 75 80 80 〇

 5B 0.68 0.69 0.68 0.69 0.68 0.68 0.67 0.67 0.67 0.65 0.65 0.65

li face 10 75 75 75 75> 200〉 200> 200> 200> 200> 200> 200> 200 Δ 7.2

 IB 0.69 0.70 0.65 0.69

 10 75 75 75 75> 200〉 200〉 200〉 200> 200〉 200> 200> 200 m 7.0

 0.65 0.68 0.69 0.65

 120 110 95 100> 200> 200> 200> 200> 200> 200> 200〉 200〉 200 X 17.6

 0.55 0.56 0.55 0.58

 Note: B, M, C, and Y for printability and moisture and heat resistance represent black, magenta, cyan, and yellow, respectively. Inside

 The upper row is a dot mystery (/ im), the lower row is a circularity coefficient (closer to 1 is a perfect circle), and 1 is not measurable.

¾1 B As is clear from Table 1B, the resin composition for an ink jet recording material according to the second embodiment of the present invention has a high drying speed, a small initial dot defect in printability, and a dot resistance in wet heat resistance. No increase in diameter is observed, and there is no discoloration in water resistance. Therefore, there is no change in the image even after each test, and the printability, moisture and heat resistance, and water resistance are excellent. In addition, the transparency of the ink fixer is excellent, and a film with high transparency can be obtained.

 Example 1C

 Production Example 1 To 45 parts by weight of the crosslinked polyalkylene oxide resin obtained in C, an ethylene-vinyl acetate copolymer [softening point: 73. C, trade name: Evatate D 3012, manufactured by Sumitomo Chemical Co., Ltd.] and 45 parts by weight of maleimide copolymer [trade name: Leorex AS-170, manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.] After mixing with a 20 L Henschel mixer, kneading and pelletizing with a 30 mm extruder (LZD = 25, Darmage Screw, 150 ° C), lamination molding of PET film as supporting eyebrows by thermal lamination, A sheet having an ink fixing layer thickness of 80 m was obtained, and the above-described performance evaluation was performed.

 Example 2C

Production Example 1 An ethylene-ethyl acrylate copolymer [softening point: 43 ° C, trade name: NU C-6570, Nippon Tunicar Co., Ltd.] in 25 parts by weight of the crosslinked polyalkylene oxide resin obtained in C 5 parts by weight of 70 parts S part and maleimide copolymer [trade name: Leorex AS-170, manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.] with a 20 L Henschel mixer, and then a 30 mm extruder (LZD (25, dalmage screw, 150 ° C), pelletized, laminated by PET film as a support layer by thermal lamination, and obtained a sheet with 100 μιη thick ink fixing layer. Performance evaluation was performed. Example 3C

 Production Example 1 35 parts by weight of the crosslinked polyalkylene oxide resin obtained in C was mixed with an ethylene-vinyl acetate copolymer [Emulsion point: 82 ° C, trade name: Evatate D]

2011, Sumitomo Chemical Co., Ltd.] 35 parts by weight and maleimide copolymer [trade name: Leorex AS-170, Daiichi Kogyo Seiyaku Co., Ltd.] 30 parts by weight were mixed with a 20 L Henschel mixer. Thereafter, the mixture was kneaded with a 30 mm extruder (LZD = 25, dalmage screw, 150) to form a pellet, and a sheet having a thickness of 120 m was obtained by inflation molding, and the above-described performance evaluation was performed.

 Example 4C

 Production Example 1 Ethylene monomethyl methacrylate copolymer [melting point: 94 ° C, trade name: ACLIFT WH 302, manufactured by Sumitomo Chemical Co., Ltd.] in 60 parts by weight of the poly (alkylene oxide resin) obtained in C 20 parts by weight of a vinylbenzoyl copolymer [trade name: Sidabs P-8 CMS, manufactured by Nippon Chemical Industry Co., Ltd.] After mixing with 20 parts by weight with a 20 L Henschel mixer, a 30 mm extruder (LZD = 25, dal After kneading with a medium screw (150 ° C) to form a pellet, a sheet having a thickness of 120 was obtained by inflation molding, and the above-described performance evaluation was performed.

 Example 5C

Production Example 1 To 30 parts by weight of the polyalkylene oxide resin obtained in C, a genoate of ethylene-vinyl acetate copolymer [melting point: 183 ° C, trade name: EVAL EP-F-101, 60 parts by weight of Kuraray Co., Ltd.] and 10 parts by weight of a vinylbenzoyl copolymer [trade name: Saidubs P-8CMS, manufactured by Nippon Chemical Industry Co., Ltd.] Pellet kneaded with a dispenser (LZD-25, Dharmage Screw, 220 ° C) After lamination, lamination was carried out by hot lamination using high quality paper as a support layer to obtain a sheet having an ink fixing layer thickness of 80 zm, and the above-described performance evaluation was performed.

 Example 6C

 Production Example 2 Ethylene monoacrylic acid copolymer [Emulsion point: 43, trade name: Yucharon A2 20M, Mitsubishi Chemical Corporation 25] in 70 parts by weight of the tachibana polyalkylene oxide resin obtained in C Parts by weight and 5 parts by weight of a vinylbenzoyl copolymer [trade name: Saidubs P-8 CMS, manufactured by Nippon Chemical Industry Co., Ltd.]

After mixing with a 20 L Hensyl mixer, kneading with a 3 Omm extruder (LZD-SS dalmage screw, 150.C) and pelletizing, two-layer inflation molding using LDPE as a support layer and ink fixing A sheet having a layer thickness of 100 m was obtained, and the above-described performance evaluation was performed.

 Comparative Example 1 C

 Production Example 1 To 10 parts by weight of the crosslinked polyalkylene oxide resin obtained in C, an ethylene-vinyl acetate copolymer [softening point: 73. C, Product name: Evatate D

3012, manufactured by Sumitomo Chemical Co., Ltd.] 85 parts by weight and maleimide copolymer [melting point: 80 ° C, trade name: Leorex AS-170, manufactured by Daiichi Kogyo Pharmaceutical Co., Ltd.]

After mixing with 5% by weight with a 20 L Henschel mixer, kneading with a 30 mm extruder (L / Ώ = 25, Dal-Mage screw, 150 ° C), pelletizing, and supporting the PET film by thermal lamination Laminate molding was performed as a layer to obtain a sheet having an ink fixing layer thickness of 80 m, and the above-described performance evaluation was performed.

 Comparative Example 2 C

Production Example 1 An ethylene-ethyl acrylate copolymer [Emulsion point: 43] was added to 50 parts by weight of the crosslinked polyalkylene oxide resin obtained in C. C, Product name: NU C-6570, manufactured by Nippon Tunicer] 50 parts by weight were mixed with a 20 L hensile mixer, kneaded with a 30 mm extruder (LZD = 25, dalmage screw, 150 ° C), pelletized, and then subjected to heat lamination. Laminate molding is performed using PET film as a support layer to form an ink fixing layer! ? A sheet of only 100 μm was obtained, and the above-described performance evaluation was performed.

 Comparative Example 3C

 Production Example 1 98 parts by weight of the polyalkylene oxide resin obtained from C was mixed with a vinylbenzoyl copolymer [Emulsion point: 100 to 110 ° C, trade name: Sai Dubbs P-8CMS, Nippon Chemical Industry ( 2% by weight in a 20 L Henschel mixer, kneaded with a 30 mm extruder (LZD = 25, Dalmatiz screyu, 150 ° C), pelletized, and then molded into a 120 m thick by inflation molding. And obtained the above-mentioned performance evaluation.

Table 1C summarizes the results of the performance evaluation of these Examples and Comparative Examples.

Dot diameter (urn), lower is circularity coefficient (closer to 1 is true circle), one is not measurable _c

Ϊ C As is clear from Table 1C, the resin composition for an ink jet recording material according to the third embodiment of the present invention has a high drying rate, a small initial dot diameter in printability, and a dot in wet heat resistance. No increase in diameter is observed, and there is no discoloration in water resistance. In addition, the ink fixing layer does not break in water resistance. Therefore, even after each test, no change in the image was observed, and it was clarified that the printability, the wet heat resistance, and the water resistance were excellent. Industrial applicability

 The resin composition for an ink jet recording material of the present invention provides an optimum recording material for a water-based ink jet, which has good processability, particularly has a high ink absorption rate, and has excellent wet heat resistance and water resistance of a recorded image. Is done.

 In particular, according to the resin composition for an ink jet recording material of the second embodiment of the present invention, an optimum recording material for an ink jet which is excellent in transparency in addition to the above characteristics is provided.

 Further, according to the resin composition for an ink jet recording material of the third aspect of the present invention, in addition to the above characteristics, an optimum recording material for a water-based ink jet having excellent water resistance of an ink fixing layer is provided. .

Claims

The scope of the claims

1. An ink jet recording material comprising 13 to 95% by weight of a polyalkylene oxide resin, 3 to 80% by weight of a polyamide resin, and 1 to 50% by weight of a cationic polymer. Resin composition.

2. Katachibana polyalkylene O sulfoxides resin, a polyalkylene O dimethylsulfoxide, a resin obtained by Katachibana a diol in Isoshianeto compound, a melt viscosity at the 170, 5 OkgZcm ² weight under the 2,000 to 200,000 Boyes 2. The resin composition for an ink jet recording material according to claim 1, wherein the water absorption capacity (g pure water Zg resin) is 10 to 45 gZg.

 3. The polyalkylene oxide is heavy; at least one selected from the group consisting of polyethylene oxide, polypropylene oxide, ethylene oxide propylene oxide copolymer having a fi average molecular weight of 500 to 500,000, and a mixture thereof. 2. The resin composition for an ink jet recording material according to claim 1, which is a seed.

 4.Polyamide resin is 6 nylon, 66 nylon, 8 nylon, 11 nylon, 12 nylon, 612 copolymerized nylon, 6Z66Z12 copolymerized nylon, amorphous nylon, transparent nylon and 2. The resin composition for an ink jet recording material according to claim 1, wherein the resin composition is at least one member selected from the group consisting of a polyether and a polyamide copolymer.

 5. The resin composition for an ink jet recording material according to claim 1, wherein the cationic polymer is an acrylamide-based copolymer.

 6. The resin composition for an ink jet recording material according to claim 1, wherein the cationic polymer is a maleimide copolymer.

7. The ink jet printer according to any one of claims 1 to 6 An ink jet recording material comprising a resin composition for a recording material as a constituent element.

 8. A resin composition for an ink jet recording material, comprising 30 to 99% by weight of a crosslinked polyalkylene oxide resin and 1 to 70% by weight of a cationic polymer.

9. The crosslinked polyalkylene oxide resin is a resin obtained by crosslinking a polyalkylene oxide and a diol with an isocyanate compound, and has a contact viscosity under a load of 170, 50 kcm ² of 200 9. The resin composition for an ink jet recording material according to claim 8, wherein the resin composition has a water absorption of 0 to 200,000 and a water absorption capacity (pure water 8 resin) of 10 to 45 g Z g. .

 10. The polyalkylene oxide is selected from the group consisting of a polyethylene oxide having a weight average molecular weight of 500,000 to 500,000, a polypropylene oxide, an ethylene oxide / propylene oxide copolymer, and a mixture thereof. 9. The resin composition for an ink jet recording material according to claim 8, which is at least one kind.

 11. The resin composition for an ink-jet recording material according to claim 8, wherein the cationic polymer is a methacrylate copolymer.

 12. The resin composition for an ink jet recording material according to claim 8, wherein the cationic polymer is a vinylbenzoyl-based copolymer.

 13. The resin composition for an ink jet recording material according to claim 8, wherein the cationic polymer is a maleimide copolymer.

 1 4. An ink jet recording material comprising the resin composition for an ink jet recording material according to any one of claims 8 to 13 as a constituent element.

1 5. The composition contains 13 to 95% by weight of a crosslinked polyalkylene oxide resin, 3 to 80% by weight of an ethylene copolymer resin, and 1 to 50% by weight of a cationic polymer. A resin composition for an ink jet recording material.

1 6. A crosslinked polyalkylene oxide resin is a resin obtained by crosslinking a polyalkylene oxide and a diol with an isocyanate compound, and has a melt viscosity at 170 ° C and 50 kcm ² under load. 16. The resin composition for an ink jet recording material according to claim 15, wherein the resin composition has a boiling point of 200 to 200,000 and a water absorption capacity (g pure water / g resin) of 10 to 45 gZg. object.

 1 7. The polyalkylene oxide is at least selected from the group consisting of polyethylene oxide, polypropylene oxide, ethylene oxide propylene oxide copolymer having a weight average molecular weight of 500,000 to 500,000, and a mixture thereof. 16. The resin composition for an ink jet recording material according to claim 15, which is one kind.

 1 8. Ethylene copolymer resin is ethylene mono-vinyl acetate copolymer, ethylene mono-vinyl acetate copolymer gen- ide, ethylene-acrylic acid copolymer, ethylene-methacrylic acid copolymer, ethylene- 15. The method according to claim 15, which is at least one selected from the group consisting of a methyl methacrylate copolymer, an ethylene-ethyl acrylate copolymer, and an ethylene-acrylic acid ester maleate terpolymer. The resin composition for an ink jet recording material according to the above.

 1 9. The resin composition for an ink jet recording material according to claim 15, wherein the cationic polymer is a maleimide copolymer.

 20. The resin composition for an ink-jet recording material according to claim 15, wherein the cationic polymer is a vinylbenzoyl-based copolymer.

 21. An ink jet recording comprising the resin composition for an ink jet recording material according to any one of claims 15 to 20 as a constituent element.